diff --git a/p7lib/CMakeLists.txt b/p7lib/CMakeLists.txt
index 1ca182c..4ab7ed0 100644
--- a/p7lib/CMakeLists.txt
+++ b/p7lib/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.0 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.5 FATAL_ERROR)
 
 #project(p7lib)
 
diff --git a/p7lib/Headers/CMakeLists.txt b/p7lib/Headers/CMakeLists.txt
index e498b95..1db7bcd 100644
--- a/p7lib/Headers/CMakeLists.txt
+++ b/p7lib/Headers/CMakeLists.txt
@@ -1,3 +1,3 @@
-cmake_minimum_required(VERSION 3.0 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.5 FATAL_ERROR)
 
 set(PATH_P7_API ${CMAKE_CURRENT_SOURCE_DIR} CACHE INTERNAL "")
diff --git a/p7lib/Shared/CMakeLists.txt b/p7lib/Shared/CMakeLists.txt
index 6673920..e84cf54 100644
--- a/p7lib/Shared/CMakeLists.txt
+++ b/p7lib/Shared/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.0 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.5 FATAL_ERROR)
 
 set(PATH_SHARED ${CMAKE_CURRENT_SOURCE_DIR} CACHE INTERNAL "")
 set(PATH_SHARED_CRYPTO ${CMAKE_CURRENT_SOURCE_DIR}/Crypto CACHE INTERNAL "")
diff --git a/p7lib/Sources/CMakeLists.txt b/p7lib/Sources/CMakeLists.txt
index 8bebc21..e25603d 100644
--- a/p7lib/Sources/CMakeLists.txt
+++ b/p7lib/Sources/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.0 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.5 FATAL_ERROR)
 
 project(p7)